Acetylene-lamp



A. L. HANSEN.

ACETYLENE LAMP.

APPLICATION FILED IuNEz, |919.

1,368,143. Patented Feb. 8, 1921.

UNITED STAS PATENT orifice.

AUGIE L. HANSEN, OF EVANSTON, ILLINOIS. ASSIG-NOR TO JUSTRITEMANUFACTUR- ING COMPANY, OF CHCAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ACETYLENE-LAMP.

Specification of Letters Patent.

Patented Feb. s, 1921.

Applcationled .Tune 27, 1919. Serial No. 307,190.

To all 'whom it may concern:

Be it known that I, AUGIE L. HANSEN, a citizen of the United States, anda resident of Evanston, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Acetylene Lamps, ofwhich the following is a specification.

vMy invention relates to acetylene lamps and particularly to minersacetylene cap lamps. The invention concerns particularly improvedclosure mechanism for the water inlet opening of the water container ofthe lamp.

These lamps are of well known construction. They usually comprise awater container, a carbid container, a valve for controlling the feed ofwater from the Vwater container to the carbid container, a burner tipconnected to receive the generated gas from the carbid container, and areliector surrounding the tip. Provision is also made for permitting theflow of gas into the water container should the pressure in the carbidcontainer become excessive, and a vent is provided for releasing the gasfrom the water container. This vent is usually provided in the plugwhich closes the water inlet opening of the water container. The ventpassageway must be kept clear for the free flow of gas therethrough butat the same time, provision must be made for preventing the escape ofwater with the gas or the escape of water through the filler openingpast the plug. Heretofore, the closure plugs have been formed of sheetmetal with a vent passageway therethrough and baille means forpreventing escape of water through the passageway. Diiiiculty has beenexperienced to construct the metallic plugs suiiiciently accurately sothat they will at all times accurately seat in the filler opening andentirely seal said opening against the direct outflow of water.

The important object of my invention is, therefore, to produce a closureplug which will accurately and securely fit in the filler opening andthrough which gas can readily escape and water iow be baflied. Inaccordance with my invention, I make the side walls of the plug ofyielding elastic material such as rubber which will intimately fill thefiller opening and seal it and which will have frictional engagementwith the filler opening sides so that the plug is held in the openingagainst accidental displacement.

The construction of my improved closure plug is clearly shown on theaccompanying drawing in which- Figure 1 is a side elevational viewlof aminers cap lamp, f

Fig. 2 is a plan view of the end of the water container and the closureplug7 Fig. 3 is an enlarged sectional view on plane 8 3, Fig. 2,

Fig. 4 is an enlarged side elevational view of the closure plug,

Fig. 5 is a sectional View on plane 5-5, Fig. l, and

Fig. 6 is a view of the under side of said closure plug.

The lamp shown comprises the'water container 10, the carbid cup 11,thevalve mechanism 12 for controlling the feed of water from the watercontainer to the carbid cup, the gas conductingtube 13 and the tip 14,and the reflector 15 surrounding the tip. The valve stem 12 is 4turnedby means of the lever 16, and theflamp is supported on the miners cap bymeans of a Aclamp 17 and a hook 18.

The water container has in its top wall the 'water inlet opening 19which is surrounded by the flange 20.` As the lamp is carried on theminers `cap while he is at work, it is violently agitated and the waterin the water container thrown about with considerable force. The filleropening must therefore be kept tightly closed during use of the lamp toprevent the escape `of the water. At the same time, vent passageway mustbe provided for the escape of gases which accumulate in the watercontainer when thepressure in the carbid cup becomes excessive. l

' My improved closure plugP eiiiciently seals the filler opening andpermits unobstructed iiow of the gases from the water container. Thestructure shown comprises the sheet metal top 21 from which extends thetubular shank 22 which at its lower end receives the washer or bottomplate 23. The

shank receives the elastic material 24 such as rubber, this materialbeing held between the top 21 and the washer 23, the lower end of theshank being riveted against the plate as indicated at 25. The material24 is of a shape to fit within the flange surrounding the filler opening19. The opening shownis elliptical and the contour of the material 24 istherefore similarly elliptical in order that a snug lit is assured. Thetop 21 and the washer 23 are also elliptical and the top has the sideflanges 26 and 27 which extend downwardly a distance alongside of thematerial 24 to assist in holding said material in place. The bottomplate or washer may also have upward projections 28'for engaging in Ithe'plug material 24 to assist in holding such projection 31 by means ofwhich the plug n comes excessive.

structure can be readily swung upwardly to be removed from the iilleropening. The sides of the plug material 24v1 preferably taper so thatwhen the plug is inserted and pressure applied thereto, it willaccurately and snugly lill out the filler opening so as to form aperfect seal.

In the construction shown, the shank member 22 is in the form of atubular rivet whose head It has the vent opening 32 therethrough. Thisvent opening is provided for the outiow of gas which enters the watercontainer whenever the pressure in the carbid cup be- The ventpassageway being'at the upper end of the shank member, kwater cannotdirectly escape therethrough from the water container under ordinarycircumstances. However, as before srtated,

i the lamp is violently agitated during its use in the mine, and the gaspressure frequently becomes excessive in Y the Y carbid cupV and greatvolumes thereof flow suddenly into the water container and escape underconsider- I able pressure through the vent passageway, the rapidlyflowing gas tending to carry water particles with it through the ventpassageway. The gas flowing rapidly through the water will also causeconsiderable splashing thereof. I therefore provide guards or j battlewalls at the lower end of the shank `gas leaves the passageway 32,nearly all of Vits remaining moisture content will have been dropped ordeposited against the walls of the shank, the moisturek being thenreceived by the inclined baiiie platesvand conducted back to the watercontainer.

Any water splashing upwardly,will strike the inclined baffle plates andbe prevented from reaching the outlet vent. Thus, mois- Y ture is at alltimes prevented from escaping through the vent but the gas is free toHow therethrough. As the elastic plug `lits snugly in the iller opening19, it is impossible for any water to escape through such opening. Aftera period of use, the water in the waterv container usually becomes quitehot and if any particles could splash tothe exterior, wearing of thelamp would, of course, be quite disagreeable. However, my improvedconstruction prevents any suoli escape of moisture and the lamp cantherefore be worn with confidence and comfort. The rubber plug bodyengagesithe filler opening flange with suiicient friction to preventaccidental opening of the plug during use of the lamp.

Having thus described my invention,` I claim the following:

1. A closure plug structure for the filler l opening of the watercontainer of an acetylene lamp, comprising a .sheet metal top, a hollowshank extending therefrom, a plug body of resilient material surroundingsaid shank, a bottom of sheet metal secured to the shank end and servingto hold said body on said shank, the top of said shank Vhaving a ventopening therethrough, and baffle walls forming an integral part of thebottom and extending diagonally toward eachother into position below theend of said shank.

2. A closure plug structure-for the filler opening of the watercontainer of an acetylene lamp, comprising a sheet metal top plate, ahollow shank extending therefrom, a plug body of resilient materialsurrounding said shank, a bottom plate secured to the shank end to holdthe plug body to the shank and against the top plate, side flanges onthe top plate engaging with the plug body to prevent rotation thereof onthe shank, the shank at its upper end having a restricted vent outlet,baille walls forming an integral part of said bottom plate extendingbelow said shank to prevent the entrance of 'water Y thereto.

3. A closure plug structure for the'filler 1,ses,14s g opening of the'water container of a carbid lamp, comprising an elliptical sheet metaltop plate, a tubular shank extending from said plate, an elliptical plugbody of resilient material surrounding said shank, means for holdingsaid body on said shank, and flanges extending downwardly from said capand engaging against the sides of said plug body for preventing rotationof said body on said shank. 1o

In witness whereof, I hereunto subscribe my name this 25th day of JuneA. D., 1919.

AUGIE L. HANSEN.

